Polyphemus Caterpillar

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Pizzazz
Posts: 492
Joined: Thu Nov 28, 2013 7:39 pm

Polyphemus Caterpillar

Post by Pizzazz »

Hi Gang

I decided I better try to get some shots before this guy makes its cocoon.
Although it seems still, there were slight movements so stacking did not
work out very well.

These are shots of the feet structure and a head shot that looks like there
is a "fang" being exposed.

Crazy!


Mike


Hind feet
Image


Head shot with "fang"
Image


feet
Image

feet - Notice the small structures on the edge by the stem
Image
Last edited by Pizzazz on Wed May 15, 2019 9:54 am, edited 1 time in total.

MarkSturtevant
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Location: Michigan, U.S.A.

Post by MarkSturtevant »

Very interesting! The fang thing is an antenna.
Mark Sturtevant
Dept. of Still Waters

rjlittlefield
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Post by rjlittlefield »

Ah, these images bring back memories! Polyphemus and Cecropia were two of the earliest moths I ever raised.

The small structures on the edge by the stem are "crochets". At higher magnification they are revealed as tiny claws, often with hooked ends. Details of the arrangement of crochets is a diagnostic feature for many lepidoptera larvae.

See https://www.photomacrography.net/forum/ ... hp?t=31879 for similar structures on a cutworm proleg.

--Rik

Pizzazz
Posts: 492
Joined: Thu Nov 28, 2013 7:39 pm

Post by Pizzazz »

Mark/Rik

Thanks for the info. An antenna! It looks so much like a mouth-related
structure due to where it is, but that is amazing.

I have a few more caterpillars, and maybe I can get them to cooperate
and stay still so I can do a stack of the feet.

Thanks


Mike

MarkSturtevant
Posts: 808
Joined: Sat Nov 21, 2015 6:52 pm
Location: Michigan, U.S.A.

Post by MarkSturtevant »

Getting pix of crotchets has long been on my 'to do' list, as they are pretty interesting. You can experiment on how to best get them to show. My hunch - which could be wrong - is to get the 'pillar to go onto a thicker stem so they really have to extend the fleshy pro-legs to get a grip. The rear end will hold still for a time while the front end is eating something. Good luck!
Mark Sturtevant
Dept. of Still Waters

Pizzazz
Posts: 492
Joined: Thu Nov 28, 2013 7:39 pm

Post by Pizzazz »

Mark

I think that sounds like a great idea.

I will try it.

Mike

Pizzazz
Posts: 492
Joined: Thu Nov 28, 2013 7:39 pm

Post by Pizzazz »

Mark


I tried to do what you suggested and as quick as I was, there is constant
slight movement in the body, affecting the ability to get a good exposure.

The caterpillar was as you predicted: it's tiny little feet and toes could not
wrap around the stem.

I will try again.

Mike

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